48
Se c t ion 5
Adjust m e nt s
6. Loosen one bearing adjusting ring one notch,
then tighten opposite ring the same amount to
keep differential roller bearing preload.
Figure 5.3.
NOTE
When you adjust backlash, only move ring gear.
Do not move drive pinion.
•
Backlash is increased by moving ring gear
away from drive pinion.
•
Backlash is decreased by moving ring gear
toward drive pinion.
7. Repeat steps two to six until backlash is within
specifications. Record setting for use when you
adjust pinion bearing preload.
Teeth Contact Patterns
In the following procedures, movement of the contact
pattern along length of tooth is indicated as toward
the “heel” or “toe” of the ring gear.
Figure 5.4.
Verification Procedure
1. Apply a marking compound to approximately 12
teeth of ring gear. Rotate ring gear so that the 12
gear teeth are next to drive pinion. Figure 5.5.
2. Apply load on ring gear with wood pry bar.
Rotate gear forward and backward so 12 gear
teeth go past the drive pinion six times to get
contact patterns. Repeat if needed to get a more
clear pattern. Figure 5.6.
Figure 5.3
Figure 5.4
Figure 5.5
Figure 5.6
INCREASE
BACKLASH
DECREASE
BACKLASH
TOE
HEEL
CONCAVE SIDE
CONVEX SIDE
TOP
BOTTOM
HEEL
TOE
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